1 files changed, 0 insertions, 161 deletions
diff --git a/libcxxabi/src/Unwind/EHHeaderParser.hpp b/libcxxabi/src/Unwind/EHHeaderParser.hpp
deleted file mode 100644
index 7945c7ba2fb..00000000000
--- a/libcxxabi/src/Unwind/EHHeaderParser.hpp
+++ /dev/null
@@ -1,161 +0,0 @@
-//===------------------------- EHHeaderParser.hpp -------------------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is dual licensed under the MIT and the University of Illinois Open
-// Source Licenses. See LICENSE.TXT for details.
-//
-//
-//  Parses ELF .eh_frame_hdr sections.
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef __EHHEADERPARSER_HPP__
-#define __EHHEADERPARSER_HPP__
-
-#include "libunwind.h"
-
-#include "AddressSpace.hpp"
-#include "DwarfParser.hpp"
-
-namespace libunwind {
-
-/// \brief EHHeaderParser does basic parsing of an ELF .eh_frame_hdr section.
-///
-/// See DWARF spec for details:
-///    http://refspecs.linuxbase.org/LSB_3.1.0/LSB-Core-generic/LSB-Core-generic/ehframechpt.html
-///
-template <typename A> class EHHeaderParser {
-public:
-  typedef typename A::pint_t pint_t;
-
-  /// Information encoded in the EH frame header.
-  struct EHHeaderInfo {
-    pint_t eh_frame_ptr;
-    size_t fde_count;
-    pint_t table;
-    uint8_t table_enc;
-  };
-
-  static void decodeEHHdr(A &addressSpace, pint_t ehHdrStart, pint_t ehHdrEnd,
-                          EHHeaderInfo &ehHdrInfo);
-  static bool findFDE(A &addressSpace, pint_t pc, pint_t ehHdrStart,
-                      uint32_t sectionLength,
-                      typename CFI_Parser<A>::FDE_Info *fdeInfo,
-                      typename CFI_Parser<A>::CIE_Info *cieInfo);
-
-private:
-  static bool decodeTableEntry(A &addressSpace, pint_t &tableEntry,
-                               pint_t ehHdrStart, pint_t ehHdrEnd,
-                               uint8_t tableEnc,
-                               typename CFI_Parser<A>::FDE_Info *fdeInfo,
-                               typename CFI_Parser<A>::CIE_Info *cieInfo);
-  static size_t getTableEntrySize(uint8_t tableEnc);
-};
-
-template <typename A>
-void EHHeaderParser<A>::decodeEHHdr(A &addressSpace, pint_t ehHdrStart,
-                                    pint_t ehHdrEnd, EHHeaderInfo &ehHdrInfo) {
-  pint_t p = ehHdrStart;
-  uint8_t version = addressSpace.get8(p++);
-  if (version != 1)
-    _LIBUNWIND_ABORT("Unsupported .eh_frame_hdr version");
-
-  uint8_t eh_frame_ptr_enc = addressSpace.get8(p++);
-  uint8_t fde_count_enc = addressSpace.get8(p++);
-  ehHdrInfo.table_enc = addressSpace.get8(p++);
-
-  ehHdrInfo.eh_frame_ptr =
-      addressSpace.getEncodedP(p, ehHdrEnd, eh_frame_ptr_enc, ehHdrStart);
-  ehHdrInfo.fde_count =
-      addressSpace.getEncodedP(p, ehHdrEnd, fde_count_enc, ehHdrStart);
-  ehHdrInfo.table = p;
-}
-
-template <typename A>
-bool EHHeaderParser<A>::decodeTableEntry(
-    A &addressSpace, pint_t &tableEntry, pint_t ehHdrStart, pint_t ehHdrEnd,
-    uint8_t tableEnc, typename CFI_Parser<A>::FDE_Info *fdeInfo,
-    typename CFI_Parser<A>::CIE_Info *cieInfo) {
-  // Have to decode the whole FDE for the PC range anyway, so just throw away
-  // the PC start.
-  addressSpace.getEncodedP(tableEntry, ehHdrEnd, tableEnc, ehHdrStart);
-  pint_t fde =
-      addressSpace.getEncodedP(tableEntry, ehHdrEnd, tableEnc, ehHdrStart);
-  const char *message =
-      CFI_Parser<A>::decodeFDE(addressSpace, fde, fdeInfo, cieInfo);
-  if (message != NULL) {
-    _LIBUNWIND_DEBUG_LOG("EHHeaderParser::decodeTableEntry: bad fde: %s\n",
-                         message);
-    return false;
-  }
-
-  return true;
-}
-
-template <typename A>
-bool EHHeaderParser<A>::findFDE(A &addressSpace, pint_t pc, pint_t ehHdrStart,
-                                uint32_t sectionLength,
-                                typename CFI_Parser<A>::FDE_Info *fdeInfo,
-                                typename CFI_Parser<A>::CIE_Info *cieInfo) {
-  pint_t ehHdrEnd = ehHdrStart + sectionLength;
-
-  EHHeaderParser<A>::EHHeaderInfo hdrInfo;
-  EHHeaderParser<A>::decodeEHHdr(addressSpace, ehHdrStart, ehHdrEnd, hdrInfo);
-
-  size_t tableEntrySize = getTableEntrySize(hdrInfo.table_enc);
-  pint_t tableEntry;
-
-  size_t low = 0;
-  for (size_t len = hdrInfo.fde_count; len > 1;) {
-    size_t mid = low + (len / 2);
-    tableEntry = hdrInfo.table + mid * tableEntrySize;
-    pint_t start = addressSpace.getEncodedP(tableEntry, ehHdrEnd,
-                                            hdrInfo.table_enc, ehHdrStart);
-
-    if (start == pc) {
-      low = mid;
-      break;
-    } else if (start < pc) {
-      low = mid;
-      len -= (len / 2);
-    } else {
-      len /= 2;
-    }
-  }
-
-  tableEntry = hdrInfo.table + low * tableEntrySize;
-  if (decodeTableEntry(addressSpace, tableEntry, ehHdrStart, ehHdrEnd,
-                       hdrInfo.table_enc, fdeInfo, cieInfo)) {
-    if (pc >= fdeInfo->pcStart && pc < fdeInfo->pcEnd)
-      return true;
-  }
-
-  return false;
-}
-
-template <typename A>
-size_t EHHeaderParser<A>::getTableEntrySize(uint8_t tableEnc) {
-  switch (tableEnc & 0x0f) {
-  case DW_EH_PE_sdata2:
-  case DW_EH_PE_udata2:
-    return 4;
-  case DW_EH_PE_sdata4:
-  case DW_EH_PE_udata4:
-    return 8;
-  case DW_EH_PE_sdata8:
-  case DW_EH_PE_udata8:
-    return 16;
-  case DW_EH_PE_sleb128:
-  case DW_EH_PE_uleb128:
-    _LIBUNWIND_ABORT("Can't binary search on variable length encoded data.");
-  case DW_EH_PE_omit:
-    return 0;
-  default:
-    _LIBUNWIND_ABORT("Unknown DWARF encoding for search table.");
-  }
-}
-
-}
-
-#endif